I was reading HN comments yesterday shitting on modern IBM for being a non tech consulting company that has not innovated since the mid nineties.
To be fair, IBM did this in the 90s with the PowerPC 615, which had PowerPC and x86 decoders on the same core.
The z mainframe team does good technical work but then the high price cancels out all the value of that work. I'm not sure if that counts as innovation or not.
There are already microcontrollers that have both arm + riscv support. This isn't something insane.
Those takes are wrong with or without this particular processor.
More like mid-2000s, even with the least charitable interpretation.
There was a time when IBM dominated console CPUs for a massively successful generation (PS3, Xbox 360, Nintendo Wii).